Sbarro LLC, the pizza restaurant chain, on Monday filed for bankruptcy protection for the second time in less than three years, after struggling with too much debt and lower customer traffic in the malls that house many of its restaurants.

Sbarro and more than 30 affiliates filed for Chapter 11 protection from creditors with the U.S. Bankruptcy Court in Manhattan.

The Melville, New York-based company has between $100 million and $500 million in both assets and liabilities, according to court papers.

Last month, Sbarro said it would close 155 of about 400 restaurants it owns in North America to cut costs.

Following those closures, it would still have more than 800 restaurants worldwide, including those owned by franchisees.